Cigarette rod making machines



Aug. 23, 1960 w. P E

CIGARETTE ROD MAKING MACHINES 2 Sheets-Sheet 1 Filed July 11, 1957 1960 w. DUPKE 2,949,918

CIGARETTE ROD MAKING MACHINES Filed July 11, 1957 2 Sheets-Sheet 2 CIGARETTE ROD MAKING MACHINES Werner Dupke, Hamburg, Bergedorf, Germany, assignor to Kurt Korber & Co. KG, Hamburg, Bergedorf, Germany Filed July 11, 19 51, Ser. N6. 671,214

Claims priority, application Germany 'July 26, 1956 s Claims. 01. 131-66) The invention relates to cigarette rod making machines and particularly is directed to a machine for producing a continuous tobacco rod or cigarette rod by employing for this purpose a rotary conveyor disc rotating in a vertical plane and in which together with the tobacco conveyor band and the tobacco another endless supporting band is threaded about the conveyor disc.

In machines of this type it is known that the tobacco tends to pack at the feeding point of the conveyor disc so that such machines are not adapted to be used for juiced or torn tobacco. Therefore, such machines can not be used at all for producing cigarillos or similar tobacco goods.

. It is an object of the present invention to eliminate any packing of tobacco at the mentioned feeding point of the conveyor disc in that .the supporting band not only at the point where it engages the conveyor disc but also at the point where it leaves the conveyor disc is threaded at least over one supporting roller in such a manner that it moves for a suitably long stretch parallel or approximately parallel to the tobacco conveyor band.

Since the tobacco in this manner will be placed between the supporting band and the tobacco conveyor band it will be transferred to the conveyor disc without any packing and also in this manner the tobacco will leave the conveyor disc without packing.

With this and other objects in view the invention will now be described in a more detailed manner in connection with the accompanying drawings in which:

Figure 1 illustrates diagrammatically a side elevation view of the machine.

Figure 2 illustrates in an enlarged scale the feeding portion and the'discharge portion of the tobacco conveyor band.

Figure 3 illustrates in cross section the feeding station of the tobacco conveyor band substantially along the line III-III of Figure 2.

Figure 4 is a cross sectional view along substantially the line IVI-V of Figure 2.

Figure 5 is a cross sectional view at the discharge point of the tobacco conveyor band substantially along the lines V--V of Figure 2.

Figure 6 illustrates in an enlarged view a bridging member between the tobacco conveying band and the supporting roller for the cigarette paper band.

The conveyor disc 1 is mounted for rotation on a horizontal shaft 2 so as to be rotated in a vertical plane. The circumference of the conveyor disc 1 is provided with a circumferential groove 1'. The tobacco is deposited by a distributor, to be described hereinafter upon an endless tobacco conveyor band 4 which is driven by a drive disc 5 which rotates in counter-clockwise direction and is threaded over a number of lower idle rollers 6, then passes in clockwise direction around substantially onehalf of the circumference of the conveyor disc 1 and then over another group of idle rollers 6 which conduct the conveyor band 4 back to the drive disc 5.

It will be noted that the upper portion of the tobacco v United States Patent 2,949,918 Patented Aug. 23, 1960 conveyor band 4 extends a considerable distance beyond the upper portion of the conveyor disc 1 toward the right into the range of the feeding nozzle 10. Furthermore, there is provided an endless supporting band 8a which is threaded over supporting rollers 9d and 9e and then is conducted approximately parallel to the conveyor band 4 until it reaches the lower portion of the conveyor disc 1. The supporting band 8a then engages directly the circumference of the conveyor disc 1. In fact, it is positioned between the circumference of the conveyor disc 1 and the tobacco conveyor band 4 which also follows the circumference of the conveyor'disc 1.' Finally, when the supporting band 8a leaves the upper portion of the disc 1 it moves substantially parallel to the conveyor band 4 toward the right hand side of the disc 1 and is then threaded over rollers 9a and 9b to move downwardly toward the other supporting rollers 90, 9d and 9e.

The cigarette paper band 7 is taken from a supply spool 7 and guided adjacent the upper portion of the band 8a over a paper band supporting roller 7a to the top side of the forming band 12. In view of the arrangement of the supporting band rollers 9a and 9b the supporting band 8a is conducted closely adjacent the paper band 7 so that there will be arranged between the two latter a small bridge member 14; see Fig. 6. This bridge member 14 is arranged somewhat inclined with respect to the direction of the feed movement so that the tobacco will reach first the front portion of this bridge member and shortly thereafter will be transferred to the paper band 7. This very narrow transfer portion between the supporting band 8a and the forming band 12 is a great advantage and distinguishes the present invention o-ver machines of the prior art.

The Figures 3, 4 and 5 illustrate the cross-sectional shapes of the supporting band 8a and of the tobacco conveyor band 4. Since no paper band 7 is conducted around the conveyor disc 1 the tobacco rod will receive already on the conveyor disc 1 a U-shaped cross section.

Referring againto Figure 1, it will be noted that the machine frame G has mounted therein a motor 17 having on its armature shaft a pulley 18 which drives by means of a number of V belts 19 a pulley 20. The latter is mounted on a horizontal main shaft 21 which drives by means of helical gears 22 and 23 a vertical transmission shaft 24. The main shaft 21 also drives by means of bevel gears 25 and 26 and spur gears 27 and 28 the drive roller 29' for the forming band 12. At the lower end of the Vertical transmission shaft 24 is arranged a bevel gear 30 mashing with a bevel gear 31 on a shaft 32. The latter drives by means of the bevel gears 33 and 34 the disc 5 and furthermore by means of the spur gears 35, 36, 37, 38 the conveyor disc 1 is driven.

The vertical transmission shaft 24 has also mounted thereon between its ends another bevel gear 39 which by means of a bevel gear 40 drives a horizontal shaft 41 and the clutch 42 which when engaged drives the shaft 43 of the tobacco distributing device.

On the free end of this shaft 43 is mounted a spur gear 44 which drives over the spur gear 45 a shaft 46 and the toothed discharge roller 47. On the shaft 46 is arranged adjacent the spur gear 45 another spur gear 48 engaging a spur gear 49 on a shaft 50, which drives the beater roller 51. Furthermore, the spur gear 49 engages a spur gear 52 on the shaft 53 which drives the roller 54 over which the belt is threaded which supplies the tobacco to the toothed discharge roller 47 which latter deposits the tobacco onto the tobacco conveyor band 4.

What I claim is:

1. In a machine for making a continuous tobacco rod and cigarette rod, respectively, a circular conveyor disc having a circumferential groove in its outer edge and mounted for rotation in a vertical plane, means for rotatengages and follows that portion of the supporting bandv which is threaded around one-half of said conveyor disc, said tobacco conveyor band when reaching the upper portion of said conveyor disc extending a portion horizontally beyond the highest point of said disc and then being threaded reversely over rollers and downwardly beyond the lowermost portion of saidconveyor disc and spaced therefrom, means for driving said tobacco conveyor band, said endless tobacco supporting band at the upper portion of said conveyor disc being threaded to follow for a pre determined distance said upper horizontally extending portion of said endless tobacco conveyor band before being directed downwardly again where it is guided away from said disc toward said tobacco distributor means and reversed to follow said endless tobacco conveyor band for a considerable distance before moving into engagement with said conveyor disc, an endless forming band arranged adjacent the upper portion of said conveyor disc for receiving the tobacco rod discharged by the latter, and a roller arranged adjacent the upper portion of said supporting band where the latter is directed downwardly, said roller being employed for conducting a cigarette paper band onto said forming band and to receive said tobacco rod as it is discharged from said channel.

2. In a machine for making a continuous tobacco rod and ciragette rod, respectively, a circular conveyor disc having a circumferential groove in its outer edge and mounted for rotation in a vertical plane, means for rotating said conveyor disc, an endless tobacco supporting band threaded about said conveyor disc and engaging the circumference thereof and the groove therein along at least one-half of its entire length, an endless tobacco conveyor band having a horizontally extending conveyor run portion for feeding tobacco to the lower portion of said circular disc and arranged to have its horizontal portion positioned for receiving tobacco from a tobacco distributor means and conveying it toward the lower portion of said disc into a channel formed between said supporting band and said tobacco conveyor band which latter engages and follows that portion of the supporting band which is threaded around one-half of said conveyor disc, said tobacco conveyor band when reaching the upper portion of said conveyor disc extending a portion horizontally beyond the highest point of said disc and then being threaded r'eversely over rollers and downwardly beyond the lowermost portion of said conveyor disc and spaced therefrom, means for driving said tobacco conveyor band, said endless tobacco supporting band at the upper portion of said conveyor disc being threaded to follow for a predetermined distance said upper horizontally extending for receiving the tobacco rod discharged by the latter, a

roller arranged adjacent the upper portion of said sup-' porting band where the latter is directed downwardly, said roller being employed for conducting a cigarette paper band onto said forming band and to receive said tobacco rod as it is discharged from said channel, and

a small bridge member arranged between said cigarette paper band roller and the adjacent portion of said supporting band and arranged at an angle to the direction of the continuous tobacco rod.

3. In a machine for making a continuous tobacco rod and cigarette rod respectively, acircular conveyor disc having a circumferential groove in its peripheral edge and mounted for rotation in a vertical plane, means for rotating said conveyor disc, an endless tobacco supporting band threaded about said conveyor disc and engaging the circumference thereof and the groove therein along at least one half of its entire length, an endless tobacco conveyor band having a horizontally extending conveyor run portion for feeding tobacco to the lower portion of said circular disc and arranged to have its horizontal portion positioned for receiving tobacco from a tobacco distributor means and conveying it toward the lower portion of said disc into a channel formed between said supporting band and said tobacco conveyor band which latter engages and follows that portion of the supporting band which is threaded around one half of said conveyor disc, said tobacco conveyor band whenrreaching the upper portion of said conveyor disc extending a portion horizontally beyond the highest point of said disc and then being threaded reversely over rollers and downwardly beyond the lowermost portion of said conveyor disc and spaced therefrom, means for driving said tobacco conveyor band, said endless tobacco supporting band at the upper portion of said conveyor disc being threaded to follow for a predetermined distance said upper horizontally extending portion of said endless tobacco conveyor band before being directed downwardly again along the periphery with said conveyor disc, an endless forming band arranged adjacent the upper portion of said conveyor disc for receiving the tobacco rod discharged by the latter, and means for conducting a cigarette paper band onto said forming band to receive the tobacco rod as it is discharged from said channel.

References Cited in the file of this patent UNITED STATES PATENTS 1,998,146 Smith Apr. 16, 1935 2,745,413 Korber May 15, 1956 2,759,482 Harding Aug. 21, 1956 FOREIGN PATENTS 746,105 Great Britain Mar. 7, 1956 

